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虚拟筛选和分子动力学模拟方法鉴定阿尔茨海默病治疗的多靶标导向配体。

Virtual screening and molecular dynamics simulation approach for the identification of potential multi-target directed ligands for the treatment of Alzheimer's disease.

机构信息

Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab, Bathinda, Punjab, India.

Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, India.

出版信息

J Biomol Struct Dyn. 2024 Jan-Feb;42(1):509-527. doi: 10.1080/07391102.2023.2201838. Epub 2023 Apr 28.

Abstract

Alzheimer's disease (AD) is a multifactorial neurological disorder characterized by memory loss and cognitive impairment. The currently available single-targeting drugs have miserably failed in the treatment of AD, and multi-target directed ligands (MTDLs) are being explored as an alternative treatment strategy. Cholinesterase and monoamine oxidase enzymes are reported to play a crucial role in the pathology of AD, and multipotent ligands targeting these two enzymes simultaneously are under various phases of design and development. Recent studies have revealed that computational approaches are robust and trusted tools for identifying novel therapeutics. The current research work is focused on the development of potential multi-target directed ligands that simultaneously inhibit acetylcholinesterase (AChE) and monoamine oxidase B (MAO-B) enzymes employing a structure-based virtual screening (SBVS) approach. The ASINEX database was screened after applying pan assay interference and drug-likeness filter to identify novel molecules using three docking precision criteria; High Throughput Virtual Screening (HTVS), Standard Precision (SP), and Extra Precision (XP). Additionally, binding free energy calculations, ADME, and molecular dynamic simulations were employed to get structural insights into the mechanism of protein-ligand binding and pharmacokinetic properties. Three lead molecules viz. AOP19078710, BAS00314308 and BDD26909696 were successfully identified with binding scores of -10.565, -10.543 & -8.066 kcal/mol against AChE and -11.019, -12.357 & -10.068 kcal/mol against MAO-B, better score as compared to the standard inhibitors. In the near future, these molecules will be synthesized and evaluated through and assays for their inhibition potential against AChE and MAO-B enzymes.

摘要

阿尔茨海默病(AD)是一种多因素的神经紊乱疾病,其特征是记忆力减退和认知障碍。目前可用的单靶点药物在 AD 的治疗中已经失败,多靶点定向配体(MTDLs)正被探索作为一种替代治疗策略。胆碱酯酶和单胺氧化酶被报道在 AD 的病理中起着关键作用,同时针对这两种酶的多效配体处于不同的设计和开发阶段。最近的研究表明,计算方法是识别新疗法的强大而可靠的工具。目前的研究工作集中在开发同时抑制乙酰胆碱酯酶(AChE)和单胺氧化酶 B(MAO-B)的潜在多靶点定向配体,采用基于结构的虚拟筛选(SBVS)方法。在应用泛分析干扰和药物相似性过滤后,对 ASINEX 数据库进行了筛选,使用三个对接精度标准(高通量虚拟筛选(HTVS)、标准精度(SP)和额外精度(XP))来识别新分子。此外,还进行了结合自由能计算、ADME 和分子动力学模拟,以获得对蛋白质-配体结合机制和药代动力学性质的结构见解。成功鉴定了三种先导分子,即 AOP19078710、BAS00314308 和 BDD26909696,它们与 AChE 的结合评分分别为-10.565、-10.543 和-8.066 kcal/mol,与 MAO-B 的结合评分分别为-11.019、-12.357 和-10.068 kcal/mol,与标准抑制剂相比,得分更好。在不久的将来,这些分子将被合成并通过 和 测定来评估它们对 AChE 和 MAO-B 酶的抑制潜力。

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